*
* CCID-specific options are ignored during connection setup, as
* negotiation may still be in progress (see RFC 4340, 10.3).
+ * The same applies to Ack Vectors, as these depend on the CCID.
*
*/
- if (dreq != NULL && opt >= 128)
+ if (dreq != NULL && (opt >= 128 ||
+ opt == DCCPO_ACK_VECTOR_0 || opt == DCCPO_ACK_VECTOR_1))
goto ignore_option;
switch (opt) {
case DCCPO_CHANGE_L:
/* fall through */
case DCCPO_CHANGE_R:
+ if (pkt_type == DCCP_PKT_DATA)
+ break;
if (len < 2)
goto out_invalid_option;
rc = dccp_feat_change_recv(sk, opt, *value, value + 1,
case DCCPO_CONFIRM_L:
/* fall through */
case DCCPO_CONFIRM_R:
- if (len < 2)
+ if (pkt_type == DCCP_PKT_DATA)
+ break;
+ if (len < 2) /* FIXME this disallows empty confirm */
goto out_invalid_option;
if (dccp_feat_confirm_recv(sk, opt, *value,
value + 1, len - 1))